Progress and limitations of thin-film silicon solar cells
•A triode PECVD technique has been applied to deposit a-Si:H films exhibiting low light-induced degradation.•A novel honeycomb-shaped periodic texture has been developed and applied to µc-Si:H solar cells.•Four record-breaking solar cell efficiencies have been achieved with single-junction and multi...
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Veröffentlicht in: | Solar energy 2018-08, Vol.170, p.486-498 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | •A triode PECVD technique has been applied to deposit a-Si:H films exhibiting low light-induced degradation.•A novel honeycomb-shaped periodic texture has been developed and applied to µc-Si:H solar cells.•Four record-breaking solar cell efficiencies have been achieved with single-junction and multijunction device structures.
The major issues of thin-film silicon solar cells have been the light-induced metastability of hydrogenated amorphous silicon (a-Si:H) and the weak infrared light absorption of hydrogenated microcrystalline silicon (μc-Si:H). In order to overcome these challenges, we have developed a novel deposition process for a-Si:H and an improved light trapping scheme for μc-Si:H light absorbers, leading to four record independently-confirmed conversion efficiencies with single-junction and multijunction device structures. In this article, we review some technological progresses that led to the notable improvement in thin-film silicon solar cells, and address some limitations imposed by the absorber layer quality as well as the cell design. |
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ISSN: | 0038-092X 1471-1257 |
DOI: | 10.1016/j.solener.2018.05.077 |